MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 150

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Low-Voltage Inhibit (LVI)
10.4 Functional Description
Advance Information
150
DETECTOR
LOW V
V
DD
DD
Figure 10-1
contains a bandgap reference circuit and comparator. The LVI power
disable bit, LVIPWRD, disables the LVI from monitoring V
The LVI reset disable bit, LVIRSTD, disables the LVI module from
generating a reset when V
LVIRSTD are in the CONFIG register ($001F) (see
Register). Once an LVI reset occurs, the MCU remains in reset until V
rises above a voltage, V
state of the LVIOUT flag in the LVI status register (LVISR).
An LVI reset also drives the RST pin low to provide low-voltage
protection to external peripheral devices.
Figure 10-1. LVI Module Block Diagram
shows the structure of the LVI module. The LVI module
Low-Voltage Inhibit (LVI)
FROM CONFIG
LVIRSTD
LVIOUT
LVIR
DD
. The output of the comparator controls the
falls below a voltage, V
FROM CONFIG
LVIPWRD
LVISTOP
STOP INSTRUCTION
MC68HC708AS48
5.4 Configuration
LVII
LVI RESET
. LVIPWRD and
DD
MOTOROLA
voltage.
—
Rev. 4.0
DD